公开(公告)号：US20150262774A1

公开(公告)日：2015-09-17

申请号：US14401469

申请日：2012-05-30

Applicant: ABB Technology Ltd

Inventor： David Karlen

IPC: H01H33/10

CPC classification number: H01H33/10 ,  H01H9/362

Abstract: A low-voltage switching device including a plurality of arc-extinguishing chambers , wherein each of the arc-extinguishing chambers encloses a contacting unit including a stationary contact and a movable contact and arcs are formed when the movable contact is disconnected to the stationary contact, each of the arc-extinguishing chamber including a plurality of U-shaped arc extinguishing plates arranged for splitting, guiding and cooling the arc formed between the contacts and sidewalls provided with guiding means for guiding the arms of the arc extinguishing plates. The guiding means includes a plurality of supporting plates and the supporting plates are arranged protruding towards interior of the arc-extinguishing chamber for receiving the arms of the arc-extinguishing plates and for providing electrical isolation between arms of two adjacent arc extinguishing plates.

Abstract translation: 一种包括多个灭弧室的低压开关装置，其中每个灭弧室包围具有固定触点和可动触点的接触单元，当可动触头与固定触头断开时，形成弧形， 每个灭弧室包括多个U形灭弧板，其布置成用于分开，引导和冷却形成在触头和侧壁之间的电弧，所述电弧设置有用于引导灭弧板的臂的引导装置。 引导装置包括多个支撑板，并且支撑板布置成朝向灭弧室的内部突出，用于接收灭弧板的臂并且用于在两个相邻的灭弧板的臂之间提供电隔离。